160 Mr. A. G. Butler's 
gin very short, directed slightly forwards ; two on posterior 
lateral margin eight times as long, robust, directed slightly 
backwards and iipwards ; and two short on posterior mar- 
gin, divergent, and nearly horizontal. 
Cephalothorax wanting; abdomen above reddish-oliva- 
ceous, delicately rugose and pilose, with four central and 
nineteen marginal impressed castaneous spots; spines dark 
castaneous, pilose ; ventral surface rugose and pilose, 
reddish-olivaceous, becoming blackish in the centre, trans- 
versely Avrinkled, and coarsely punctured, with impressed 
castaneous spots at bases of lateral spines ; a black conical 
projection above spinnerets. 
8. Africa, Rev. Ch. Livingstone. B.M. 
23. G. ensifera. 
Gasteracantha ensifera, Thorell, Ofvers. Vctensk. 
Akad. Forhandl. xvi. p. 302, n. 6 (1859, edit. 
1860); Eug. Resa, Zool. Arachn. p. 16 (1868). 
Sp. ead. ? S. Africa, Rev. C. Livingstone. B.M. 
Our specimen consists simply of an abdomen, there- 
fore I am unable to be certain of its identity with that 
described by Dr. Thorell. 
24. G. dicallina, n. sp. V\. IV. fig. 1. 
Female ; length of abdomen 3^ lines ; breadth at widest 
part, excluding spines, 7 lines; entire length — ?; posterior 
lateral spines 2 J lines, anterior 1 line ; of posterior mar- 
gin 2 lines. 
Cephalothorax wanting ; abdomen same general form 
as G. forniosa, Avith six angles from which the spines 
spring ; two on anterior lateral margin short, acute, directed 
laterally, with a very slight inclination forwards ; two on 
posterior lateral margin nearly three times as long, obtuse, 
but with small terminal tooth, directed laterally, and curv- 
ing backwards ; and two rather long on posterior margin, 
parallel, and directed obliquely upwards. 
Cephalothorax wanting; abdomen smooth, with minutely 
serrated margin, orange crossed through the centre by two 
irregular, waved, dark red bars, and ])osteriorly by a slender 
interrupted black line, connecting impressed spots ; four 
central and twenty-one marginal impressed red spots ; 
spines red, rugose and ])ilose ; ventral surface coarsely 
granulose, black, sjiotted Avith orange, s])ines red ; im- 
pressed s])ots at base of spines dark red ; usual black 
conical projection. 
